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Patented Jan. 24, I899.

N o. 6l8,095.

F. A. HETHERINGTON.

D B l E R (Application filed Oct; 6, 1897.)

4 Sheets-Sheet I.

(No Model.)

PHoTou-mq, wAsumm'mz. u c.

No. (8,095. Patented Ian. 24, I899. F. A. HETHERINGTON.

D R I E R (Application filed. Oct. 6, 1897.)

4 Sheets-Sheet 2.

(No Model.)

WWI wows No. 618,095. Patented Ian. 24, I899. F. A. HETHERINGTON.

D R E R (Application filed Oct. 8, 1897.)

4 Sheets-Sheet 4.

(No Model.)

WITNESSES: as... L. TQZZM @4 4? @040 ATTORNEY.

w: Nonms PETERS co. PNDTOLITHO. WASMmsYON, r c

llivrrnn STATES PATENT DRIER.

srncirrcarroiv forming part of Letters Patent No. 618,095, dated January 24, 1899.

Application filed October 6,1897. Serial No. 654,230. (No model.)

To (Z6 whom, it near] concern:

Be it known that I, FREDERICK A. l-IETH- ERINGTON, a citizen of the United States, re-

siding at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Drier, of which the following is a specification.

My invention relates to an improvement in sand-driers.

The objects of my invention are to provide a suitable cover for the twin drums of the drier, to provide an improved form of feed-spout for said drums, to provide means by which the drums may be fed from either side when mounted upon a portable platform, as in portable paving plants, to arrange a single means for removing the dried sand from both drums, and to provide the various other improvements in the details of arrangement and construction hereinafter pointed out.

The accompanying drawings illustrate my invention.

' Figure 1 is a central vertical section through one of'the drier-drums. Fig. 2 is a plan on line 2 2 of Fig. 1. Fig. 3 is an end elevation on line 3 3 of Fig. 2. Fig. i is a transverse vertical section on line 4 a of Fig. 1. Fig. 5 is a detail of a portion of the construction shown in Fig. 4. Fig. 6 is a detail of the detachable portion of the green-sand elevator.

In the drawings, 7 indicates a furnace-setting provided at each end with suitable faceplates 8 and E). Revolubly mounted over the setting are two drier-drums 10 and 11, each of which is the counterpart of the other. Each of the drier-drums consists of a sheetiron cylindrical shell, to the front and rear ends of which are secured rings 12 and 13, respectively, each of said rings being provided with an inturned annular flange 14. To

the flange 1-l of ring 12 is bolted a bearing ring 15, which extends out through the faceplate 8 and rests upon a pair of rollers carried on suitable bearings upon said face-plate in the manner described and claimed in Patent No. 582,355, issued to me May 11, 1897. Bolted to flange 1a of ring 13 is a head 16, provided with a central stud, which is supported by a bearing 17, secured to plate 9.

The stud of head 16 extends through bearing 17, and to the outer end thereof is secured a large bevel-gear 18, which meshes with a small bevel-gear 10, carried by a transverse shaft 20, which may be driven by any suitable means. It will be noticed that by removing the bolts connecting flanges 14 with ring 15 and head 16 the said parts may be easily removed, thus aifording easy access to the interior of the drier-drum. Extending through ring 15 and into the interior of the drierdrum is a breeching 21, which is supported by means of ahollow leg 22, which communicates with the interior of the breeching and extends down to the floor. Leading into the hollow leg 22 at any desired point is an airduct 23, which leads to the eye of a suitable exhaust-fan 24E. Breeching 21 is also sup ported by means of a bracket 25, which is secured to plate 8 and to the outer end of the breeching. Passing through breeching 21 and extending into the drier-drum is a feedcylinder 26, in the interior of whichis mounted a suitable feed-screw 27. The inner end of the shaft 28 of screw 27 is squared and fitted into a bracket 29, secured to the inside of the drier-drum. The outer end of shaft 28 is supported in a suitable bearing 30, secured to the outer closed end of the feed-cylinder, and said shaft is passed through said bearing a sufficient distance to allow a sprocket 31 to be secured thereon. Only one sprocket 31 is necessary, and this is secured to either one of the feedscrew shafts as occasion demands, as will be hereinafter explained. Entering into each feed -'cylinder 26 is a spout 32. The two spouts 32 lie in different planes and are brought together at their upper ends side by side in position to receive sand from a single sand-elevator. By this arrangement there is formed between the two spouts a central vertical partition 33, which lies in the plane of the elevator-buckets 34, so that as the sand is delivered from said buckets it is evenly divided by said partition, one-half passing down each spout, thus supplying 'each'drum with the same amount of green sand.

To the interior of each drum is secured a suitable conveyer 35, and the sand is discharged through openings 36 in the rear end of the shell. The sand as it is discharged through openings 36 falls upon an inclined platform 37, which discharges through an opening in face-plate 9 into a single elevatorboot 38, which is located beneath shaft and on a line between the two drums. By this arrangement the dry-sand elevator 39 may pass upon each side of shaft 20, one side be ing very close to plate 9, thus economizing space.

In a twin-drum drier ithas been found very difficult to provideasuitable cover so arranged that the heat would be con fined closely around the two drums. In the present construction I provide for each drier-drum a series of arcshaped sheet-iron sections 40, each of said sections being nearly but not quite semicir-' cular in form, the arrangement being such that when used as covers for the two drums springing from the tops of the side walls of the setting they will meet at a point between the two drums somewhat above the center line thereof, thus forming an annular chamber 41 over each drum. Riveted to the outer end of each section 40 is an angle-iron 42, one arm of which is substantially horizontal and rests upon one arm of an angle-iron 43, which is bolted to the upper ends of the sheet-iron facing 44 of the side walls of the setting. Irons 42 and 43 are held' together by bolts 45, which may be easily removed. The inner end of each section 40 is bent to lie in a substantially horizontal plane, as at 46, and to this portion is riveted an angle-iron 47, one arm of said iron being caused to stand substantially vertical. Between the upright arms of the adjacent opposite angle irons 47 is mounted a strip 48, to which said angle-irons are secured by removable bolts 40. For the purpose of securing the several sections 40 of each series together a flange 50 is riveted to each side edge of each section and the adjacent flanges are bolted together bysuitable bolts 51. By this arrangement any one of the cover-sections 40 may be removed without disturbing the others by removing bolts 51, 49, and 45. In order to support the adjacent ends of the cover-sections by means which shall be entirely free from the influence of the heat of the furnace, I pivot to each of strips 48 one end of one or more hangers 52, the opposite ends of which are pivoted to a runner or T-iron 53, supported by the roof structure 54.

The green-sand elevator 34 is supported at the upper end by a suitable sprocket wheel 55, carried by a shaft 56, which in turn is supported in bearings carried by a pair of uprights 57, which are removably secured to the roof structure 54 upon either side of the upper end of spouts 32. The lower end of elevator 34 is supported by a sprocket-wheel 58, carried by a shaft 59, supported in suitable bearings 59, mounted at the lower end of a detachable frame 60. Frame 60 consists of a pair of skids 61, connected by a cross-bar 62 and the shaft 59. To the upper end of each of skids 61 is secured a hook 65, which may be inserted into an eye 64, carried by the floor or'platform supporting the drier. This construction is especially desirable when the drier is used in connection with a portable paving plant, in which case the frame 60 may be easily removed from the side of the car and stored away when the plant is to be moved. By the use of the frame 60 the lower end thereof may be placed directly upon the ground and the green sand shoveled directly into the elevator-buckets, thus doing away with the necessity of a receiving-boot.

In the use of the drier in a portable plant in which the sand-drier is supported upon a railroad-car it is often convenient to feed the drier from either side of the car. In the construction just described uprights 57, together with the parts supported thereby, may be secured upon either side of the spouts 32, arrangements being made upon the roof structure upon both sides of said spouts to receive the bolts thereof, and frame 60 may be placed upon the corresponding side of the car, suitable eyes 64 being mounted upon both sides of the car.-

In order to drive elevator 34, a sprocket 65 is secured to shaft 59, and chain 66 is passed over said sprocket and the sprocket 31, the said last-mentioned sprocket being secured to one or the other of shafts 28, depending upon the position of uprights 57 and frame 60.

I claim as my invention-- 1. In a drier, the combination with the furnace-setting and a pair of drier-drums mounted therein, of a double-arc-shaped cover therefor, the said arcs being substantially concentric with the drier-drums, and means for supporting the middle of said double are from the outside of the setting, substantially as described.

2. In a drier, the combination with the furnace-setting and a pair of drier-drums mounted therein, of a series of arc-shaped coversections mounted over each drum and substantially concentric therewith,the said coversections springing from the side walls of the setting, and means for supporting the adjacent ends of the said cover=sections from the outside of the setting.

3. In a drier, the combination with the fur nace-setting and a pair of drier-drums mount ed therein, of a pair of arc-shaped cover-sections one mounted over each drum and sub stantially concentric therewith, the outer ends of said cover-sections resting upon the side walls of the setting, means for removably securing said ends in position, means for detachably holding the adjacent ends of said cover-sections together, and means for supporting said adjacent ends from without, substantially as described.

4. In a drier, the combination with the furnace-setting and a pair of drier-dru ms mounted therein, of a series of arc-shaped cover-sections mounted over each drum and substantially concentric therewith, the outer ends of said cover-sections resting upon the side walls of the setting, means for removably securing said ends in position, means for detachably holding the adjacent ends of the two series of cover-sections together, means for supporting said adjacent ends from without, and means for detachably securing the adjacent edges of the cover-sections of each series together, substantially as set forth.

5. In a drier, the combination with a pair of drier-drums, of a feed-spout leading into each of said drums, the outer ends of said spouts lying in different planes and side by side in position to receive material from a single feeding means, substantially as and for the purpose set forth.

6. In a drier, the combination with a pair of drier-drums, of a breeching extending into one end of each of said drums, a feed-cylinder leading through each of said breechings into the interior of the adjacent drier-drum, and a feed-spout leading from each of said feed-cylinders, the said feed-spouts lying in different planes and the upper ends thereof lying side by side in position to receive material from a single feeding means, substantially as described.

7. In a drier, the combination with a pair of drier-dru ms mounted in a suitable setting, of a single elevator-boot, mounted at the discharge ends of said drums outside the setting,

a communicating passage leading from the discharge end of each drum and through the setting into the said boot, and an elevator mounted in said boot and adapted to convey the material therefrom.

8. The combination with a drier and a feed-spout leading thereto, an endless elevator, a wheel adapted to engage said elevator, means for supporting said Wheel upon either side of said spout, a frame carrying at its lower end a Wheel adapted to engage the elevator, the lower end of said frame being adapted to rest upon the ground, and means for supporting the upper end of said frame upon either side of the drier, substantially as described.

9. A detachable portion of an endless elevator the same consisting of a framecarrying at or near one end a Wheel adapted to engage the carrying portion of said elevator, and means carried by the opposite end of said frame by which the said end may be supported above the Wheel-carrying end, substantially as and for the purpose set forth.

FREDERICK A. HETHERINGTON. lVitnesses:

ARTHUR M. H001), FRANK A. FAHLE. 

